Revert[8] "replace SkXfermode obj with SkBlendMode enum in paints"

src/gpu/GrTextureToYUVPlanes.cpp

Index: src/gpu/GrTextureToYUVPlanes.cpp
diff --git a/src/gpu/GrTextureToYUVPlanes.cpp b/src/gpu/GrTextureToYUVPlanes.cpp
index 5e7dafecf33e279eec008d406e953821c4f9378f..93a62d26433f23e234d88136291581c0958e9552 100644
--- a/src/gpu/GrTextureToYUVPlanes.cpp
+++ b/src/gpu/GrTextureToYUVPlanes.cpp
@@ -41,7 +41,7 @@ static bool convert_texture(GrTexture* src, GrDrawContext* dst, int dstW, int ds
         return false;
     }
     GrPaint paint;
-    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
+    paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
     paint.addColorFragmentProcessor(std::move(fp));
     dst->drawRect(GrNoClip(), paint, SkMatrix::I(), SkRect::MakeIWH(dstW, dstH));
     return true;